Department of Water and Environmental Science and Technologies, University of Cantabria, Avda. Los Castros, s/n, 39005 Santander, Spain.
Department of Water and Environmental Science and Technologies, University of Cantabria, Avda. Los Castros, s/n, 39005 Santander, Spain.
Bioresour Technol. 2017 Aug;238:147-156. doi: 10.1016/j.biortech.2017.04.014. Epub 2017 Apr 7.
Three different types of anaerobic sludge (granular, thickened digestate and anaerobic sewage) were evaluated as seed inoculum sources for the high rate anaerobic digestion of pig slurry in UASB reactors. Granular sludge performance was optimal, allowing a high efficiency process yielding a volumetric methane production rate of 4.1LCHLd at 1.5days HRT (0.248LCHgCOD) at an organic loading rate of 16.4gCODLd. The thickened digestate sludge experimented flotation problems, thus resulting inappropriate for the UASB process. The anaerobic sewage sludge reactor experimented biomass wash-out, but allowed high process efficiency operation at 3days HRT, yielding a volumetric methane production rate of 1.7LCHLd (0.236LCHgCOD) at an organic loading rate of 7.2gCODLd. To guarantee the success of the UASB process, the settleable solids of the slurry must be previously removed.
三种不同类型的厌氧污泥（颗粒状、浓缩消化物和厌氧污水）被评估为 UASB 反应器中猪粪进行高速厌氧消化的种接种源。颗粒状污泥的性能最佳，允许高效处理，在有机负荷率为 16.4gCODLd 时，水力停留时间为 1.5 天，容积甲烷产率为 4.1LCHLd（0.248LCHgCOD）。浓缩消化物污泥实验中出现浮选问题，因此不适合 UASB 工艺。厌氧污水污泥反应器实验中出现生物量洗出，但在 3 天 HRT 时允许高效处理，在有机负荷率为 7.2gCODLd 时，容积甲烷产率为 1.7LCHLd（0.236LCHgCOD）。为了保证 UASB 工艺的成功，必须预先去除浆液中的可沉降固体。
